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Finding the Fourth Proportional to 344.69, 517.05 and 136.45

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Solution

The fourth proportional to 344.69, 517.05 and 136.45 is: 204.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.69 : 517.05 = 136.45 : x
  2. Step 2: Convert to fraction form
    344.69/517.05 = 136.45/x
  3. Step 3: Cross multiply
    344.69x = 517.05 × 136.45
  4. Step 4: Simplify right side
    344.69x = 70,551.47
  5. Step 5: Solve for x
    x = 70,551.47/344.69
  6. Step 6: Final answer
    x = 204.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.